Epoxy composites reinforced by alkaline–acid treated yucca fibers

Kacem, MA, Guebailia, M, Halimi, R, Abdi, S and Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X, 2025. Epoxy composites reinforced by alkaline–acid treated yucca fibers. Macromolecular Materials and Engineering: 70003. ISSN 1438-7492

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Abstract

This study investigates the impact of chemical treatments on the physico–chemo–mechanical properties of mechanically extracted yucca fibers and the mechanical performance of epoxy-based bio-composites. Initially, yucca fibers are treated with sulfuric acid (H2SO4 at 1% and 4%, during 30 min) and sodium hydroxide (NaOH at 3% and 8%, during 120 min), aiming to enhance their properties. Scanning electron microscope (SEM) analysis reveals improved surface quality of fibers and reduced diameters, while fourier transform infrared spectroscopy (FTIR) confirms their functional groups. Yucca-treated fibers exhibit significant tensile strength improvements, with increases of 101.22% (518 MPa) for fibers treated with 3% NaOH and 93.33% (497 MPa) for those treated with 1% sulfuric acid, compared to untreated fibers (257 MPa). Subsequently, bio-composites elaborated via mold casting technique and using these treated fibers demonstrate enhanced mechanical performance. Tensile strength increases by 25% (29.6 MPa) and 45% (34.4 MPa) for composites reinforced with fibers treated with 3% NaOH and 1% sulfuric acid, respectively, compared to untreated fiber composites (23.6 MPa). Similarly, compressive strength improves by 23.35% (79.5 MPa) and 9.85% (89.3 MPa), while bending strength reaches 41.03 MPa (4.3%) and 45.27 MPa (15.1%) for composites reinforced with fibers treated at 3% NaOH and 1% sulfuric acid, respectively.

Item Type:	Journal article
Publication Title:	Macromolecular Materials and Engineering
Creators:	Kacem, M.A., Guebailia, M., Halimi, R., Abdi, S. and Bodaghi, M.
Publisher:	Wiley
Date:	5 May 2025
ISSN:	1438-7492
Identifiers:	Number Type 10.1002/mame.202500067 DOI 2444098 Other
Rights:	© 2025 the author(s). Macromolecular Materials and Engineering published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Divisions:	Schools > School of Science and Technology
Record created by:	Jonathan Gallacher
Date Added:	28 May 2025 13:46
Last Modified:	28 May 2025 13:46
URI:	https://irep.ntu.ac.uk/id/eprint/53658

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